【IP 68 Water proof】: The highest waterproof rating IP68, allows wearing all the time when swimming, showering and up to 3 meters diving. Much better than IP67 waterproof which protected from immersion in water with a depth of less than 1 meter and only for up to 30 minutes.

【Bulit in USB Plug and Long-lasting Battery】: Just remove the band and charge it with any USB port; no charging cable needed; one single charge gives you up to 5-7 days of battery life. We offer 60 days money back and one year warranty, gives you the best after-sales service. If you have any questions about our products, please feel free to contact us.